Question text
34 A resistor of resistance R is connected to a variable resistor, a voltmeter and a power supply of electromotive force (e.m.f.) E. V R 0 (cid:1) 2R E The resistance of the variable resistor increases from 0 to 2R. What happens to the reading on the voltmeter? A It increases from 0 to 1E. 3 B It increases from 0 to 1E. 2 C It increases from 0 to 2E. 3 D It increases from 0 to E.
34 A resistor of resistance R is connected to a variable resistor, a voltmeter and a power supply of
electromotive force (e.m.f.) E.
V
R
0 (cid:1) 2R
E
The resistance of the variable resistor increases from 0 to 2R.
What happens to the reading on the voltmeter?
A It increases from 0 to 1E.
3
B It increases from 0 to 1E.
2
C It increases from 0 to 2E.
3
D It increases from 0 to E.
Select your answer: