Thursday, April 11, 2013

An electroscope charged WITHOUT contacting a charged body is charged by:


Q-1;  An electroscope charged WITHOUT contacting a charged body is charged by:
1) induction
2) conduction
3) convection
4) insulation
ANSWER: 1 -- INDUCTION
Q-2;  The potential drop between the terminals of a battery is equal to the battery's EMF when:
1) no current is drawn from the battery
2) a very large current is drawn from the battery
3) the internal resistance of the battery is very large
4) the resistance in the external circuit is small
ANSWER: 1 -- NO CURRENT IS DRAWN FROM THE BATTERY
Q-3;  To convert a galvanometer to a voltmeter, you should add a:
1) high resistance in series
2) high resistance in parallel
3) low resistance in series
4) low resistance in parallel
ANSWER: W -- HIGH RESISTANCE IN SERIES
Q-4;  The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is
1) 0 degrees
2) 30 degrees
3) 60 degrees
4) 90 degrees
ANSWER: Z -- 90 DEGREES

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