To step down the voltage from 120V to 24V, a step-down transformer is required.
To calculate the current in the secondary circuit of the calculator, we can use Ohm's Law, which states that I = V/R.
I (secondary) = 24V / 10 ohms
I (secondary) = 2.4 amps
As for the primary circuit, we can use the equation P = IV to find the power consumed in the secondary circuit. Since transformers are generally assumed to have close to 100% efficiency, the power consumed in the primary circuit should be the same.
P = IV
P (secondary) = 24V x 2.4A
P (secondary) = 57.6 watts
Therefore, the current in the primary circuit of the calculator can be calculated using the equation P = IV.
I (primary) = 57.6 watts / 120V
I (primary) = 0.48 amps
A voltage of 120v a.c is supplied to a calculator which uses only 24v. What type of transformer is required? If the resistance is 10 ohms, calculate the current in the secondary and primary circuits of the calculator
1 answer
1 answer