Question

The formula for voltage (in volts) is given by V = IR, where I is the current in amperes, and R is the resistance in ohms.
If a light bulb uses 0.4 amperes of current at a voltage of 1.8 volts, the formula to find R is_____ , and the resistance of the bulb is_____ ohms.

Answer 1

Answers for 1st: R= I/V
R=V/I
R=VI

Answer 2

Answers for 2nd: 4
4.5
5

Answer 3

Do you know how to get R by itself in the equation?

Answer 4

would you divide out the I?

Answer 5

yes

Answer 6

so R= V/I?

Answer 7

yes. and then just plug in the numbers for the 2nd part

Answer 8

4.5?

Answer 9

yep

Answer 10

THANK YOU!

Answer 11

yw

Answer 12

medal, fan and testimonial heading your way

Answer 13

thank you