A circuit is set up as shown in the diagram above. When t...
A circuit is set up as shown in the diagram above. When the key is closed, the ammeter reading will be
6A
4A
2A
1A
Correct answer is C
The resistors are connected both in parallel and series. To calculate the total resistance, we have:
For the parallel connection: 1R=11+11
1R=2⟹R=0.5Ω
For the series connection: Rtotal=(1+0.5)Ω=1.5Ω
Recall, V=IR
3=1.5I⟹I=31.5=2A
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