Whenever two charges are separated, there exists _______.
(a) electromotive force
(b) an electromagnetic force
(c) a magnetic field
(d) none of these
(b) an electromagnetic force
(c) a magnetic field
(d) none of these
In the circuit shown, the ammeter reads 1 ampere and voltmeter 10 volts. The internal resistance of the ammeter is 1 ohm and that of voltmeter is 50 ohms. The value of R is _______.
(a) 111 .2 ohms (b) 120 ohms (c) 100 ohms (d) 112 ohms Ans: D
Comments
Post a Comment