Back to MAGNETIC EFFECT OF CURRENT
JEE PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT
1
Medium
1 of 1
Analyzing
+4 | -1
Assertion: Resistance of an ammeter is less than the resistance of a milli ammeter.
Reason: Value of shunt required in case of ammeter is more than a milli ammeter.
Reason: Value of shunt required in case of ammeter is more than a milli ammeter.
View answer and explanation
Correct option: B
If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
Option B is correct. Both the assertion and reason are true, but the reason does not directly explain why an ammeter's resistance is less than a milliammeter's.
More Questions from MAGNETIC EFFECT OF CURRENT
Practice All Chapter MCQs →
A needle made of bismuth is suspended freely in a magnetic field. The angle which the needle makes with the magnetic field is:
Assertion: If a charged particles is moving in perpendicular uniform magnetic field, its kinetic energy does not change
Reason: Velocity of charge particle is not changing in magnetic field. Pick out the wrong statement : A steady current is flowing in a circular coil of radius , made up of a thin conducting wire. The magnetic field at the center of the loop is . Now, a circular loop of radius is made from the same wire without changing its length, by unfolding and refolding the loop, and the same current is passed through it. If new magnetic field at the center of the coil is , then the ratio is Lorentz force can be calculated by using the formula Two particles and having equal charges, after being accelerated through the same potential difference, enter a region of uniform magnetic field and describe circular path of radius and respectively. The ratio of mass of to that of is :
Reason: Velocity of charge particle is not changing in magnetic field. Pick out the wrong statement : A steady current is flowing in a circular coil of radius , made up of a thin conducting wire. The magnetic field at the center of the loop is . Now, a circular loop of radius is made from the same wire without changing its length, by unfolding and refolding the loop, and the same current is passed through it. If new magnetic field at the center of the coil is , then the ratio is Lorentz force can be calculated by using the formula Two particles and having equal charges, after being accelerated through the same potential difference, enter a region of uniform magnetic field and describe circular path of radius and respectively. The ratio of mass of to that of is :