Question

please somebody explain why i cannot use P=VI in this question​

Answer 1

Explanation:

that 24 W power is when it runs on12 V battery

so u cannot use the 24 W ( power) for 6v battery

therefore u cannot use P = VI

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Answer 2

Answer:

Power = Voltage²/ Resistance

P = V²/R

=> R = V²/P

P = 24 W

V = 12 V

R = (12)²/24

=> R = 144/24

=> R = 6 Ω

Power when connected to 6 V

P = 6²/6

=> P = 36/6

=> P = 6 W

So wattage = 6 W if operated on 6 V

Power reduced to one fourth if voltage is halved.

so this is the answer make me a brilliant test plz