an electric dc circuit is attached to a 12 yolt battery and has a 3 ohm resistor in it find the current flowing through the circuit?
2007-07-30 12:58:13 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
go to class - it doesn't get any easier than this.
V=IR
2007-07-30 13:02:01 · answer #1 · answered by College Guy 2 · 3⤊ 0⤋
I = E/R = 12/3 = 4 amperes But
Power= VI = 12*4= 48 watts
So, if the rated power of the resistor is any less than 48 watts this will get burned and likely open and no current will circulate!.
2007-07-30 15:30:25 · answer #2 · answered by Anonymous · 2⤊ 0⤋
I=Current in Amperes
E=Voltage in Volts
R=Resistance in Ohms
I= E / R
so I= 12 / 3 and that I= 4 Amperes
Also remember the other formulas for Ohm's Law are
E= I x R and R= E / I
For Power
P= Power in Watts
I= Current in Amperes
E= Voltage in Volts
P= E x I
E= P / I
I= P / E
Hope this will help you
2007-07-30 15:48:24 · answer #3 · answered by Anonymous · 1⤊ 0⤋
12 volts divided by 3 ohms equals 4 amps 60 watts divided by 120 volts equals 0.5 amp.
2016-04-01 01:14:14 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Amps = Volts ÷ Ohms
= 12/3 = 4.0 Amps.
2007-07-30 15:20:43 · answer #5 · answered by Norrie 7 · 2⤊ 0⤋
I = E/R = 12/3 = 4 amperes
This neglects any internal resistance of the battery.
2007-07-30 13:02:44 · answer #6 · answered by ironduke8159 7 · 2⤊ 0⤋
V = I * R
I = V / R = 12 / 3 = 4 Amps
2007-07-30 13:47:25 · answer #7 · answered by mechnginear 5 · 2⤊ 0⤋
Quite heavy 4 amp circuit.
2007-07-30 15:06:03 · answer #8 · answered by Coach 6 · 2⤊ 0⤋