Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
12.3k views
in Physics by (71.2k points)

When Deepak studied the electrical circuits and the current flowing through them, he became curious about the range of the currents we come across in daily life. He collected the data and presented in a tabular form as shown below. He then studied the instruments used to detect and measure current, however could not understand the difference between an ammeter and an ideal ammeter and thus went to his teacher for the explanation.

S.No. Description Magnitude of current
1 Domestic Appliance Few amperes
2 Lightning Ten thousand amperes
3 Nervous system microamperes
4 Galvanometer Few milliamperes
5 Semiconductors Few milliamperes

(i) What values did Deepak have?

(ii) As domestic appliances carry electric current of the order of few amperes, write one safety precaution we should take while working with them.

(iii) An ammeter of resistance RA is connected in series with a resistor R and a battery of emf E and internal resistance r. The current flowing through this circuit is IA. What will be the current flowing through the circuit if the given ammeter is replaced by an ideal ammeter and find the percentage error in measuring the current through an ammeter?

1 Answer

+1 vote
by (76.3k points)
selected by
 
Best answer

(a) critical thinking, hard working

(b) One should not touch electrical appliances with wet hands/anyone precaution.

(c)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...