Why should the reistance of an ammeter be as low as possible whereas that of voltmeter be as high a possible ?

A square piece of tin of side 18 cm is to be made into a box without top, by cutting a square from each corner and folding up the flaps to form the box. What should be the side of the square to be cut off so that the volume of the box is the maximum possible.

Is it possible to charge a capacitor to any high potential at will?

Two towns Aa n dB are 60 km apart. A school is to be built to serve 150 students in town Aa n d50 students in town Bdot If the total distance to be travelled by 200 students is to be as small as possible, then the school should be built at (a)town B (b)town A (c)45 km from town A (d)45 km from town B

Of ammeter and voltmeter whose resistance is greater & why?

Of ammeter and voltmeter whose resistance is greater and why?

Why a dc voltmeter and dc ammeter cannot read ac?

Why is long distance transmission through ground waves not possible?

Rainbow is not possible in the moon,__Why?