Required Practicals

Question 1

What is the procedure for measuring specific heat capacity?

Answer 1

1. Set up the heater in contact with the material. 2. Measure the initial temperature. 3. Switch on the heater for a set time. 4. Measure the final temperature. 5. Calculate the energy supplied using Power × Time, then calculate the specific heat capacity.

Question 2

What is the procedure for investigating resistance in a wire?

Answer 2

1. Set up the circuit with an ammeter in series and a voltmeter in parallel. 2. Measure current and voltage at different wire lengths. 3. Use Ohm’s Law (Resistance = Voltage / Current) to calculate resistance for each length.

Question 3

What is the procedure for investigating I-V characteristics?

Answer 3

1. Set up a circuit with the component. 2. Vary the voltage from the power supply. 3. Measure current and voltage at each setting. 4. Plot a graph of current against voltage to determine the I-V characteristic of the component.

Question 4

What is the procedure for measuring the density of a regular object?

Answer 4

1. Measure the mass of the object using a balance. 2. Measure its dimensions using a ruler. 3. Calculate its volume (length × width × height). 4. Use the formula Density = Mass / Volume.

Question 5

What is the procedure for measuring the density of an irregular object?

Answer 5

1. Measure the mass of the object using a balance. 2. Submerge the object in water and measure the volume of displaced water (using a measuring cylinder or Eureka can). 3. Use the formula Density = Mass / Volume.

Question 6

What is the procedure for investigating resistance in series and parallel circuits?

Answer 6

1. Set up a series circuit and measure the total resistance (using current and voltage). 2. Add resistors in parallel and measure the total resistance again. 3. Compare total resistance in both series and parallel configurations.