Electromagnetic Induction - Study Mode

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[#11] Increasing the field or increasing the current will decrease the force on the conductor.

(A) Yes

(B) No

Correct Answer

(B) No

[#12] A moving magnetic field will produce the same effect as a conductor that is moving.

(A) True

(B) False

Correct Answer

(A) True

[#13] Which of the fpllowing inductor will have the least eddy current losses ?

(A) Air core

(B) Laminated iron core

(C) Iron core

(D) Powdered iron core

Correct Answer

(A) Air core

[#14] A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage?

(A) 0.01 s

(B) 0.1 s

(C) 0.5 s

(D) 5 s

Correct Answer

(C) 0.5 s

[#15] A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is

(A) 50 ohms

(B) 500 ohms

(C) 1000 ohms

(D) 5000 ohms

Correct Answer

(D) 5000 ohms