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How to round to two decimal places?

If the voltage across the circuit was 6.33 volts and the resistance was 98.89 ohms, what was the current, in milliamps, to 2 decimal places?
Original post by tvujgufytfch
If the voltage across the circuit was 6.33 volts and the resistance was 98.89 ohms, what was the current, in milliamps, to 2 decimal places?

V=IR
I = V/R

So this gives you the current in amps.

To convert to milliamps - think about the conversion of mm to metres. There are 1000mm in a metre. So there are 1000milliamps in an amp.
so I=0.064 amps which would be 6.4 x 10^-5 but my answer has to be in 2 decimal places without the 10^-5 so what would that be
Original post by tvujgufytfch
so I=0.064 amps which would be 6.4 x 10^-5 but my answer has to be in 2 decimal places without the 10^-5 so what would that be

You've divided by a thousand, not multiplied by.

One amp is1000 milliamps so you need to multiply by 1000.
Thank you so much I really don't think physics is my thing. So would that be 64.01!
Original post by tvujgufytfch
Thank you so much I really don't think physics is my thing. So would that be 64.01!

Indeed it would.

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