An electric source can supply a charge of 500 coulomb. If the current drawn by a device is $25 \mathrm{mA}$, find the time in which the electric source will be discharged completely.

The time in which the electric source will be discharged completely can be calculated using the formula: $$t = \frac{Q}{I}$$ where Q is the charge supplied by the electric source and I is the current drawn by the device.

Question 262 marksVery Short AnswerSection B

$25 \mathrm{mA}$

Electricity

Electric Current

Official answer

t = \frac{Q}{I}

time

electric source

charge

current

Marking scheme

1. $Identify the given values of Q and I$
2. $t = \frac{Q}{I}$
3. $Substitute the values and calculate the time$

Hint

$t = \frac{Q}{I}$

Quick oral answer

$The time in which the electric source will be discharged completely is 20000 s.$

Common mistakes

1. $Forgetting to convert the current from mA to A$
2. $Using the wrong formula$

Analysis and explanation

t = \frac{Q}{I}

Interesting facts

$The time in which the electric source will be discharged completely depends on the charge supplied by the source and the current drawn by the device.$

Question details

Q26 of 39 questions

Board: CBSE
Class: Class 10
Subject: Science
Year: 2024
Section: Section B
Marks: 2
Type: Very Short Answer
Chapter: Electricity
Topic: $Electric Current$
Bloom's level: Application
Syllabus topic: $Electric Current and Circuit$

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Frequently asked questions

$How many marks does this question carry in CBSE Class 10 Science 2024?$

$This question carries 2 marks in the CBSE Class 10 Science 2024 examination.$

$Which chapter does this question come from in Science?$

$This question is from the chapter "Electricity" in the CBSE Class 10 Science syllabus.$

$What topic does this question cover in Science?$

$This question covers the topic "Electric Current" from CBSE Class 10 Science.$

$What type of question is this in the CBSE Class 10 Science 2024 paper?$

$This is a Very Short Answer question from Section B in the CBSE Class 10 Science 2024 paper.$