show working please
2007-02-28 22:31:35 · 6 answers · asked by doraceadjabeng 1 in Science & Mathematics ➔ Physics
There are two fundamental equations that you have to know to answer this question. The first is Ohm's law V = IR and the second is P = IV you could also use P = I^2R (the reason power transmission lines are High Voltage and Low Current-lower power loss)
V = IR
R = V/I
= 100/10
= 10 ohms
P = IV
= 100*10
= 1000 Watts
= 1 kW (same result is acheived using I^2 R)
2007-03-01 00:57:51 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Tough question needs a " Tough Guy "
:D
According to Ohm's law
V = I * R
100 = 10 * R
Therefore R = 10 ohms
Power = P = (I^2) * R = (10^2) * 10
Therefore P = 1000 watt
2007-03-01 06:55:56 · answer #2 · answered by Kevin 5 · 0⤊ 0⤋
Power is Volts multiplied by Amps and is measured in watts, symbol W.
Resistance is Volts divided by Amps and is measured in ohms, symbol capital omega.
2007-03-01 06:36:13 · answer #3 · answered by Gnomon 6 · 0⤊ 0⤋
Resistance (R) = Voltage (V) / Current (I)
Therefore, 100V / 10A = 10 ohms
Power (P) = Voltage (v) * Current (I)
Therefore, 100V * 10A = 1000 watts = 1 kilowatt
2007-03-01 08:35:38 · answer #4 · answered by Dowland 5 · 0⤊ 0⤋
Ohms Law
V = IR
P = VI
2007-03-01 06:38:46 · answer #5 · answered by Randy G 7 · 0⤊ 0⤋
P=IxE..P=power...I=intensity of current expressed in amperes...E=volts...R=E/I...R=resistance
2007-03-01 07:09:30 · answer #6 · answered by tuxedo cat 6 · 0⤊ 0⤋