Atransformer has a secondary voltage of 140 volts and a secondary current of 3.5 amps. if the primary current is 10 amps, what is the primary voltage? (in this case, the voltages and currents are inversely proportional.)

For an ideal transformer power loss is assumed to be zero

i.e. the power in primary coil due to input voltage must be equal to power in secondary coil due to output voltage

this can be written in form of equation

here we know that

So primary coil voltage is 49 Volts

answer: he got 23

explanation:

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

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explanation: