So I was convinced I had got this question right on my mocks, but my teacher said I did it wrong and won't tell me how to redo it. I got 7A as the answer??
The battery powers 4 motors in the drone. Each motor has a resistance of 1.6 Ohms when the power input is 19.6W. The 4 motors are connected in parallel with the battery. Calculate the current in the battery.
So I was convinced I had got this question right on my mocks, but my teacher said I did it wrong and won't tell me how to redo it. I got 7A as the answer??
The battery powers 4 motors in the drone. Each motor has a resistance of 1.6 Ohms when the power input is 19.6W. The 4 motors are connected in parallel with the battery. Calculate the current in the battery.
So I was convinced I had got this question right on my mocks, but my teacher said I did it wrong and won't tell me how to redo it. I got 7A as the answer??
The battery powers 4 motors in the drone. Each motor has a resistance of 1.6 Ohms when the power input is 19.6W. The 4 motors are connected in parallel with the battery. Calculate the current in the battery.
P = I^R I = square root of P/R The current of each resistor is the square root of 19.6/1.6 Which is 3.5 The current in a circuit splits off and the total current going in is the total going out so the total current is 3.5×4 which is 14 I think this is right, I got your answer at first but I think the reason it is wrong is because if you work out the total resistance then you're assuming that the power is not the same everywhere in the circuit when I think it is if you get me. I'm an A level physics student so this should be easy to me lol. 90% sure this is wrong