A student connects a small solar panel to a 40 a resistor to make a simple circuit. The solar panel produces a voltage of 2 0. a Calculate the current in the student's circuit.

Ohm's law states that :

the terms used are :

let's solve for electric current :

the bal will not change its velocity.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27