Question

A 3 column table with 5 rows labeled table A. The first column is labeled voltage in volts with entries 1.0, 5.0, 10, 20, 50. The second column is labeled current: calculated in amps with no entries. The last column is labeled current: experimental in amps.
According to Ohm’s law, determine the calculated current for these values in Table A.

voltage = 5 V, resistance = 20 Ω:
A

voltage = 20 V, resistance = 20 Ω:
A

voltage = 50 V, resistance = 20 Ω:
A

Answer 1

Use Ohm’s law I = V / R.

- For V = 5 V, R = 20 Ω: I = 5 / 20 = 0.25 A
- For V = 20 V, R = 20 Ω: I = 20 / 20 = 1.0 A
- For V = 50 V, R = 20 Ω: I = 50 / 20 = 2.5 A

(If you want the full table filled, the remaining voltages give I = 1.0 V/20 Ω = 0.05 A and 10 V/20 Ω = 0.5 A.)