Calculate the power dissipated by a resistor when the voltage across the resistor is 10 V and the current through the resistor is 1 A (P=IV). What is the resistance of the resistor (V=IR)?
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Given:
Voltage (V) = 10V
Current (I) = 1A
Determine the Power and the Resistance.
Formula of Resistance based on Ohm's Law
V = IR
R= V/I
Formula of Power:
P = IV
Solution:
We start first in solving the power by substituting the values of I and V to the formula of P.
P = IV
P = (10V) (1A)
P = 10 Watts
For the resistance, we substitute the values of I and V to the formula of R.
R = V/I
R = 10V/1I
R = 10 Ohm
Final answer:
R = 10 Ohm
P = 10 Watts