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If δ 1 and δ 2 are the angles of dip observed in two vertical planes at right angles to each other and δ is the true value of dip
05
Sep
If δ 1 and δ 2 are the angles of dip observed in two vertical planes at right angles to each other and δ is the true value of dip If δ 1 and δ 2 are the angles of dip observed in two vertical planes at right angles to each [...]
A man can swim in still water with a speed of 2 ms^−1. If he wants to cross a river of water current speed 3 root ms^−1 along shortest possible path, then in which direction should he swim?
05
Sep
A man can swim in still water with a speed of 2 ms^−1. If he wants to cross a river of water current speed 3 root ms^−1 along shortest possible path, then in which direction should he swim? A man can swim in still water with a speed of 2 ms^−1. If he wants [...]
In figure, a semicircular wire loop is placed in uniform magnetic field B = 1.0 T. The plane of the loop is perpendicular to the magnetic field. Current i = 2 A flows in the loop in the direction shown. Find the magnitude of the
05
Sep
In figure, a semicircular wire loop is placed in uniform magnetic field B = 1.0 T. The plane of the loop is perpendicular to the magnetic field. Current i = 2 A flows in the loop in the direction shown. Find the magnitude of the A square loop of edge 1 and carrying a current [...]
A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h. The shortest possible time to cross the river is
05
Sep
A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h. The shortest possible time to cross the river is A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h. The shortest [...]
A square loop of edge 1 and carrying a current i, is placed with its edges parallel to the xy axes. There is present a non-uniform magnetic field in the region
05
Sep
A square loop of edge 1 and carrying a current i, is placed with its edges parallel to the xy axes. There is present a non-uniform magnetic field in the region A square loop of edge 1 and carrying a current i is placed with its edges parallel to the xy axes. There is present [...]
A circular of radius 0.157 m has turns. It is placed such that its axis is in magnetic meridian. A dip needle is supported at the centre of the coil with its axis of rotation horizontal, and in the plane of the coil. The angle of dip is 30∘ when a current flows through the coil. The angle of dip becomes 60∘ on reversing the current. Find the current in the coil assuming that the magnetic field due to the coil is smaller than the horizontal component of earth’s magnetic field, H = 3×10^−5 T
05
Sep
A circular of radius 0.157 m has turns. It is placed such that its axis is in magnetic meridian. A dip needle is supported at the centre of the coil with its axis of rotation horizontal, and in the plane of the coil. The angle of dip is 30∘ when a current flows through the [...]
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A circular of radius 0.157 m has turns. It is placed such that its axis is in magnetic meridian. A dip needle is supported at the centre of the coil with its axis of rotation horizontal ,
A closely wound solenoid of 1000 turns and area of cross-section 2.0×10^−4 m^2 ,
A small magnet of magnetic moment M is placed at broad side on position of a magnet of magnetic M' ,
as shown in Fig. (a) What is the torque experienced by the solenoid due to the field ? (b) If the solenoid is free to turn about the verticle direction ,
carrying a current of 2.0 A. It is placed with its horizontal axis at 30∘ with the direction of a uniform horizontal magnetic field of 0.16 T ,
specify its orientations of stabvle and unstable equilibriums. What is the amount of work needed to displace the solenoid from its stable orientation to its unstable orientations ? ,
The car is moving towards east with a speed of 25 km/h. To the driver of the car, a bus appears to move towards north with a speed of 25 root 3 km/h. What is the actual velocity of the bus?
05
Sep
The car is moving towards east with a speed of 25 km/h. To the driver of the car, a bus appears to move towards north with a speed of 25 root 3 km/h. What is the actual velocity of the bus? a bus appears to move towards north with a speed of 25 root 3 [...]
A river is flowing from west to east at a speed of 5 metres per minute. A man on the south bank of the river , capable of swimming at 10 metres per minute , in still water , wants to swim across the river in the shortest time . Finally he will move in a direction
05
Sep
A river is flowing from west to east at a speed of 5 metres per minute. A man on the south bank of the river , capable of swimming at 10 metres per minute , in still water , wants to swim across the river in the shortest time . Finally he will move in [...]
Figure (a) shows a rod PQ of length 20 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20 cm each. A magnetic field of strength 0.500 T exists in the vicinity of the wire PQ as shown
05
Sep
Figure (a) shows a rod PQ of length 20 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20 cm each. A magnetic field of strength 0.500 T exists in the vicinity of the wire PQ as shown A metal wire PQ of mass 10 g lies at [...]
A small magnet of magnetic moment M is placed at broad side on position of a magnet of magnetic M’, length 2l’ in such a way that the axis of former coincides with the perpendicular bisector of the latter. The separation between their centres is d. Calculate the nature of interaction (force or couple ) among them. What is its limiting value, when d becomes very large ?
05
Sep
A small magnet of magnetic moment M is placed at broad side on position of a magnet of magnetic M’, length 2l’ in such a way that the axis of former coincides with the perpendicular bisector of the latter. The separation between their centres is d. Calculate the nature of interaction (force or couple ) [...]
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A closely wound solenoid of 1000 turns and area of cross-section 2.0×10^−4 m^2 ,
A small magnet of magnetic moment M is placed at broad side on position of a magnet of magnetic M' ,
as shown in Fig. (a) What is the torque experienced by the solenoid due to the field ? (b) If the solenoid is free to turn about the verticle direction ,
carrying a current of 2.0 A. It is placed with its horizontal axis at 30∘ with the direction of a uniform horizontal magnetic field of 0.16 T ,
specify its orientations of stabvle and unstable equilibriums. What is the amount of work needed to displace the solenoid from its stable orientation to its unstable orientations ? ,