Photo AI

1(a) Some students investigate the electrical resistance of different components using this circuit - Edexcel - GCSE Physics - Question 1 - 2012 - Paper 1

Question icon

Question 1

1(a)-Some-students-investigate-the-electrical-resistance-of-different-components-using-this-circuit-Edexcel-GCSE Physics-Question 1-2012-Paper 1.png

1(a) Some students investigate the electrical resistance of different components using this circuit. Which row of the table is correct for both meters P and Q? Put ... show full transcript

Worked Solution & Example Answer:1(a) Some students investigate the electrical resistance of different components using this circuit - Edexcel - GCSE Physics - Question 1 - 2012 - Paper 1

Step 1

Which row of the table is correct for both meters P and Q?

96%

114 rated

Answer

The correct answer is option B. Meter P is an ammeter, and meter Q is a voltmeter. In this setup, meter P measures the current flowing through the circuit, while meter Q measures the voltage across the component being investigated.

Step 2

Calculate the voltmeter reading.

99%

104 rated

Answer

To calculate the voltmeter reading, we apply Ohm's Law, which states that voltage (V) is the product of current (I) and resistance (R):

V=IimesRV = I imes R

In this scenario, the resistance of the resistor is 12 ohms, and the current (ammeter reading) is 0.50 A. Plugging in these values gives:

V=0.50imes12=6extVV = 0.50 imes 12 = 6 ext{ V}

Thus, the voltmeter reading is 6 volts.

Join the GCSE students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

;