Posted by San on .
A commercial resistor can safely dissipate power only up to a certain rated value. Beyond this value, the resistor becomes excessively hot and often cracks apart. The resistor used in this experiment was rated by the manufacturer to be a 2 watt resistor. What is the largest voltage that can safely be applied across the resistor? Hint: The power P dissipated by a resistor R is given by P = I2R = V2R = IV where I is the current and V is the voltage.

Physics 
bobpursley,
There has to be more information.

Physics 
Joseph,
This is the question that was provided, no more information.

Physics 
bobpursley,
Then it cannot be answered.

Physics 
vero,
A 120.0 ohm resistor, a 60.0 ohm resistor, and a 40.0ohm resistor are connected in parallel and placed across a 12.0V battery. What is the current of the entire circuit?
a.
0.800 A
c.
0.600 A
b.
1.26 A
d.
0.062 A