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ICSE Class 10 Answered

Calculate Reading shown by ammeter Electoral power between P and Q
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Asked by lovemaan5500 | 04 Jan, 2018, 07:45: PM
answered-by-expert Expert Answer
emf of each cell is 2 V. Hence potential difference across the battery is 2×2 = 4V. There are two resistors of resistance 4Ω each connected in parallel. Hence equivalenet resistance is 2Ω. Hence current in the circuit as shown by ammeter is 4 / 2 = 2A.
 
Electrical power across P and Q is i2×R = 2×2×2 = 8 W
 

Answered by | 04 Jan, 2018, 07:59: PM
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