1. Science
2. Physics
3. part a multiple choice 10 marks circle the alternative...

# Question: part a multiple choice 10 marks circle the alternative...

###### Question details

Part A - Multiple Choice 10 Marks Circle the alternative A, B, C or D that best answers the question (1 Mark each)

1. Which quantities would you need to measure in order to calculate the amount of electrical energy used to heat water using an electric element?

A. Time, current and charge

B. Potential difference and current

C. Potential difference, current and resistance

D. Potential difference, current and time

2. A model train travels around a circular track which has a radius of 1.0 m. The train travels at a speed of 2.0 m s-1 . Which one of the following best describes the displacement of the train when it has completed one-half of a revolution of the track?

A. The displacement is zero

B. The displacement has a magnitude of 2 π meters

C. The displacement has a magnitude of 2.0 meters

D. The displacement has a magnitude of 4.0 meters

3. A skier is sliding down a gentle slope of soft snow. She is travelling down the slope at a constant speed. Which the following best describes why her speed is not changing?

A. The friction from the snow balances the downhill component of her weight.

B. The gravity component down the hill is not strong enough to accelerate her.

C. The friction of the snow is equal to her weight.

D. The slope is not steep enough for any acceleration to occur

4. Which of the following is correct about the magnetic field strength in a solenoid?

A. The magnetic field strength at a point well inside a solenoid is uniform and dependent on the length of the solenoid.

B. The magnetic field strength at a point well inside a solenoid is non-uniform and dependent on the length of the solenoid.

C. The magnetic field strength at a point well inside a solenoid is non-uniform and independent on the length of the solenoid.

D. The magnetic field strength at a point well inside a solenoid is uniform and independent of the length of the solenoid.

5. Which of the following best describes wave motion?

A. The transfer of energy from one place to another

B. The transfer of matter from one place to another

C. Vibrations which transfer energy from one place to another

D. Vibrations which are transverse to the direction of motion