Magnitude of the Generated Induced EMF Mcq
The magnitude of the induced EMF is directly proportional to:
a) The resistance of the circuit
b) The current flowing through the circuit
c) The change in magnetic field strength
d) The voltage applied to the circuit
Answer: c) The change in magnetic field strength
The magnitude of the induced EMF is inversely proportional to:
a) The resistance of the circuit
b) The current flowing through the circuit
c) The number of turns in the coil
d) The voltage applied to the circuit
Answer: a) The resistance of the circuit
The magnitude of the induced EMF can be increased by:
a) Decreasing the speed of the moving magnet
b) Increasing the resistance of the circuit
c) Decreasing the number of turns in the coil
d) Increasing the rate of change of magnetic field
Answer: d) Increasing the rate of change of magnetic field
The magnitude of the induced EMF is zero when:
a) The magnetic field is constant
b) The circuit is open
c) The circuit is short-circuited
d) The velocity of the moving magnet is zero
Answer: a) The magnetic field is constant
The magnitude of the induced EMF is maximum when:
a) The magnetic field is maximum
b) The magnetic field is minimum
c) The magnetic field is changing at a constant rate
d) The magnetic field is changing rapidly
Answer: d) The magnetic field is changing rapidly
According to Faraday’s law, the magnitude of the induced EMF is equal to:
a) The resistance of the circuit
b) The rate of change of magnetic field
c) The voltage applied to the circuit
d) The current flowing through the circuit
Answer: b) The rate of change of magnetic field
The magnitude of the induced EMF can be calculated using the formula:
a) EMF = Voltage / Resistance
b) EMF = Current x Resistance
c) EMF = Magnetic Field Strength x Area
d) EMF = Change in Magnetic Field x Number of Turns
Answer: d) EMF = Change in Magnetic Field x Number of Turns
The magnitude of the induced EMF depends on the:
a) Direction of the magnetic field
b) Size of the conducting loop
c) Speed of the moving magnet
d) All of the above
Answer: d) All of the above
The magnitude of the induced EMF is independent of:
a) The resistance of the circuit
b) The size of the conducting loop
c) The rate of change of magnetic field
d) The direction of the magnetic field
Answer: a) The resistance of the circuit
The magnitude of the induced EMF is measured in:
a) Amperes (A)
b) Volts (V)
c) Ohms (Ω)
d) Teslas (T)
Answer: b) Volts (V)
The magnitude of the induced EMF in a generator can be increased by:
a) Decreasing the number of turns in the coil
b) Increasing the speed of rotation
c) Increasing the resistance of the circuit
d) Decreasing the strength of the magnetic field
Answer: b) Increasing the speed of rotation
The magnitude of the induced EMF in a transformer can be increased by:
a) Increasing the number of turns in the primary coil
b) Decreasing the number of turns in the secondary coil
c) Decreasing the voltage of the primary coil
d) Increasing the frequency of the alternating current
Answer: a) Increasing the number of turns in the primary coil
The magnitude of the induced EMF in a solenoid can be increased by:
a ) Increasing the current flowing through the solenoid
b) Decreasing the length of the solenoid
c) Decreasing the number of turns in the solenoid
d) Increasing the resistance of the circuit
Answer: a) Increasing the current flowing through the solenoid
The magnitude of the induced EMF in a conductor moving in a magnetic field depends on:
a) The length of the conductor
b) The velocity of the conductor
c) The direction of the magnetic field
d) The temperature of the conductor
Answer: b) The velocity of the conductor
The magnitude of the induced EMF in a conductor moving perpendicular to a magnetic field is:
a) Maximum
b) Minimum
c) Zero
d) Constant
Answer: a) Maximum
The magnitude of the induced EMF in a conductor moving parallel to a magnetic field is:
a) Maximum
b) Minimum
c) Zero
d) Constant
Answer: c) Zero
The magnitude of the induced EMF in a conductor moving at an angle to a magnetic field is:
a) Maximum
b) Minimum
c) Zero
d) Constant
Answer: b) Minimum
The magnitude of the induced EMF in a conductor can be increased by:
a) Increasing the resistance of the conductor
b) Increasing the temperature of the conductor
c) Increasing the length of the conductor
d) Increasing the magnetic field strength
Answer: d) Increasing the magnetic field strength
The magnitude of the induced EMF in a conductor can be decreased by:
a) Increasing the resistance of the conductor
b) Decreasing the temperature of the conductor
c) Increasing the length of the conductor
d) Decreasing the magnetic field strength
Answer: d) Decreasing the magnetic field strength
The magnitude of the induced EMF in a coil can be increased by:
a) Decreasing the number of turns in the coil
b) Increasing the resistance of the coil
c) Increasing the area of the coil
d) Increasing the frequency of the alternating current
Answer: c) Increasing the area of the coil
The magnitude of the induced EMF in a coil can be decreased by:
a) Increasing the number of turns in the coil
b) Decreasing the resistance of the coil
c) Decreasing the area of the coil
d) Decreasing the frequency of the alternating current
Answer: c) Decreasing the area of the coil
The magnitude of the induced EMF in a coil depends on the:
a) Number of turns in the coil
b) Resistance of the coil
c) Area of the coil
d) All of the above
Answer: d) All of the above
The magnitude of the induced EMF in a coil can be calculated using the formula:
a) EMF = Voltage / Resistance
b) EMF = Current x Resistance
c) EMF = Magnetic Field Strength x Area
d) EMF = Rate of Change of Magnetic Field x Number of Turns
Answer: d) EMF = Rate of Change of Magnetic Field x Number of Turns
The magnitude of the induced EMF is influenced by:
a) Lenz’s law
b) Ampere’s law
c) Ohm’s law
d) Faraday’s law
Answer: d) Faraday’s law
The magnitude of the induced EMF in a closed loop is:
a) Zero
b) Maximum
c) Constant
d) Variable
Answer: a) Zero