Author Question: A galvanometer with a coil resistance of 40.0 deflects full scale for a current of 2.0 mA. What ... (Read 90 times)

RODY.ELKHALIL · **on:** Jul 29, 2018

A galvanometer with a coil resistance of 40.0 deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

A)

25 k
B)

27 k
C)

29 k
D)

31 k
E)

35 k

Question 2

A circular loop of wire of area 25 cm2 lies in the plane of the paper. An increasing magnetic field B is coming out of the paper. What is the direction of the induced current in the loop?

A)

There is no current.
B)

counterclockwise then clockwise
C)

clockwise then counterclockwise
D)

clockwise
E)

counterclockwise