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What voltage would be necessary to produce a current of 3A if the resistance of the curcuit were 50 OHMS?
Wiki User
∙ 11y ago
The voltage is gained by multiplying the current and resistance together, i.e.. 50 x 500 = 25000
Imagine the three as a triangle with the voltage at the top, and the current and resistance at the bottom-
V
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----
.
I x R
The voltage divided by the current is the resistance and the voltage divided by the resistance is the current. Therefore the current times the resistance is equal to the voltage. Having any two of these figures allows you to find the third.
Wiki User
∙ 16y ago
Wiki User
∙ 13y agoUse Ohm's Law
Voltage = Current x Resistance.
Wiki User
∙ 12y agoJust use Ohm's Law: V=IR (voltage = current x resistance).
Wiki User
∙ 11y agoUsing Ohm's Law (V = I x R),
you would multiply the current (I) by the resistance (R):
V = 3A x 50Ω = 150 Volts
Wiki User
∙ 9y agoR = U / I or Resistance = Voltage / Current
so U = R * I or Voltage = 500 * 0.3
150 Volts
Wiki User
∙ 14y agoPower = I2 R
500 = 25 I2
I2 = 20
I = sqrt(20) = 4.472 Amperes (rounded)
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