Simple Circuits
1. This question has 3 part(s).
1.1. A student finds a resistor which has no markings on it.
The student uses a voltmeter, an ammeter and a cell to find the resistance of the resistor.
Draw a circuit diagram to show how the student could set up this apparatus to find the resistance of the resistor.
1.2. In the experiment the current is 0.15 A and the potential difference is 2.0 V.
potential difference = current × resistance
Calculate the resistance of the unknown resistor.
Show your working.
Record your answer to 3 significant figures.
Answer = ........................... Ω
1.3. The student repeats the experiment with different potential differences and currents.
Look at the results.
Potential difference (V) | Current (A) (Attempt 1) | Current (A) (Attempt 2) | Current (A) (Attempt 3) | Mean current (A) |
2.0 | 0.15 | 0.14 | 0.16 | 0.15 |
4.0 | 0.31 | 0.31 | 0.31 | 0.31 |
6.0 | 0.44 | 0.44 | 0.38 | 0.44 |
8.0 | 0.60 | 0.62 | 0.58 | 0.60 |
10.0 | 0.74 | 0.75 | 0.73 | 0.74 |
There is an anomaly in the results.
i) Write down the anomaly from the table.
[1]
ii) How did the student deal with the anomaly.
[1]
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
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