A source of emf E=15V and having negligible internal resistance, is connected to a variable resistance, so that the current in the circuit increases with time as I=1.2t+3. Then, the total charge that will flow in first 5s will be
a)
10C
b)
20C
c)
30C
d)
40C
A source of emf E=15V and having negligible internal resistance, is connected to a variable resistance, so that the current in the circuit increases with time as I=1.2t+3. Then, the total charge that will flow in first 5s will be
a)
10C
b)
20C
c)
30C
d)
40C
Question ID - 151363 | SaraNextGen Top Answer
A source of emf E=15V and having negligible internal resistance, is connected to a variable resistance, so that the current in the circuit increases with time as I=1.2t+3. Then, the total charge that will flow in first 5s will be
a)
10C
b)
20C
c)
30C
d)
40C
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A source of emf E=15V and having negligible internal resistance, is connected to a variable resistance, so that the current in the circuit increases with time as I=1.2t+3. Then, the total charge that will flow in first 5s will be |
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a) |
10C |
b) |
20C |
c) |
30C |
d) |
40C |
1 Answer
127 votes
Answer Key / Explanation : (c) -
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(c) Charge (q) is given by
Given Integrating the expression using
We have
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127 votes
Answer Link
127