Procedure to perform the experiment

Step 1: To begin the experiment, click on the MCB button.

Calibration of Voltmeter

Step 2: Once the bulbs on the MCB light up, use the slider bar to give voltage to the standard voltmeter.

Step 3:Vary the voltage of the slider bar 5 to 6 times and note down the voltage readings in obsesrvation table .
Calculate the error between the two readings and use this to calibrate the voltmeter.
Record the readings and calculations in a table.

Calibration of Ammeter

Step 4:Close the table switch to supply power to the lamp load.

Step 5: To calibrate the ammeter, load should be given to the supply, otherwise, the ammeter will show a zero reading.

Step 6:Click on the switch of the lamp load for which power do you want to calibrate the ammeter.

Step 7: Note down the readings of the test ammeter and the standard ammeter, and record them in the table.