A student investigates the resistance of a lamp. She obtains these readings for the potential difference (voltage) across the lamp and the current in the lamp. | voltage in V | current in A | |--------------|---------------| | 6.0 | 0.40 | (i) Calculate the resistance, R, of the lamp. $$R = \frac{V}{I}$$ (ii) Calculate the power supplied to the lamp. (iii) Calculate the amount of energy transferred by the lamp in 40 s.

Photo AI

A student investigates the resistance of a lamp - Edexcel - GCSE Physics - Question 5 - 2016 - Paper 1

Question 5

A student investigates the resistance of a lamp. She obtains these readings for the potential difference (voltage) across the lamp and the current in the lamp. | vo... show full transcript

Worked Solution & Example Answer:A student investigates the resistance of a lamp - Edexcel - GCSE Physics - Question 5 - 2016 - Paper 1

Step 1

Calculate the resistance, R, of the lamp.

96%

114 rated

Answer

To calculate the resistance, we use the formula:

$R = \frac{V}{I}$

Substituting the known values:

$R = \frac{6.0}{0.40}$

Now, evaluating this gives:

$R = 15 \; \Omega$

Step 2

Calculate the power supplied to the lamp.

99%

104 rated

Answer

Power can be calculated using the formula:

$P = V \times I$

By substituting the given values:

$P = 6.0 \times 0.40$

Evaluating this gives:

$P = 2.4 \; W$

Step 3

Calculate the amount of energy transferred by the lamp in 40 s.

96%

101 rated

Answer

The energy transferred can be calculated using:

$E = P \times t$

Substituting the known values:

$E = 2.4 \times 40$

Evaluating this gives:

$E = 96 \; J$

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

;