makayla4141
24.02.2020 •
Physics
How do you work out the potential diffrance
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Ответ:
The potential difference is the drop in voltage that occurs across a resistor as current flows through it in a circuit, potential difference or voltage(V) = current (I) *resistance (R), or to abbrevate V = I*R. In this case, I = 5amps and R = 10 ohms, so V = 5 * 10 = 50volts
Ответ:
The rays will cross at the focal point.
Explanation:
Rays that are parallel and near the principal axis of a concave mirror converge at the focal point after reflecting from the mirror.