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The plane of a square loop of wire edge length a = 0.200 m is perpendicualr to the Earth’s magnetic field at a point where B = 15.0μT, as shown in . The total resistance of the loop and the wires connecting it to a sensitive ammeter is 0.50Ω. If the loop is suddenly collapsed by horizontal forces as shown, what is the total charge passing through the ammeter?
19
Oct
The plane of a square loop of wire edge length a = 0.200 m is perpendicualr to the Earth’s magnetic field at a point where B = 15.0μT, as shown in . The total resistance of the loop and the wires connecting it to a sensitive ammeter is 0.50Ω. If the loop is suddenly collapsed [...]
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as shown in . The total resistance of the loop and the wires connecting it to a sensitive ammeter is 0.50Ω. If the loop is suddenly collapsed by horizontal forces as shown ,
The plane of a square loop of wire edge length a = 0.200 m is perpendicualr to the Earth's magnetic field at a point where B = 15.0μT ,
what is the total charge passing through the ammeter? ,
A uniform of rope length L and mass M is placed on a smooth fixed wedge as shown. Both ends of rope are at same horizontal level. The rope is initially released from rest, then the magnitude of initial acceleration of rope is.
19
Oct
A uniform of rope length L and mass M is placed on a smooth fixed wedge as shown. Both ends of rope are at same horizontal level. The rope is initially released from rest, then the magnitude of initial acceleration of rope is. A uniform of rope length L and mass M is placed on [...]
Reading shown in two spring balances S1 and S2 is 90 kg and 30 kg respectively and lft is accelerating upwards with acceleration 10m/s^2.S1 in elongated and S2 is compressed. The mass is stationary with respect to lift. Then the mass of the block will be
19
Oct
Reading shown in two spring balances S1 and S2 is 90 kg and 30 kg respectively and lft is accelerating upwards with acceleration 10m/s^2.S1 in elongated and S2 is compressed. The mass is stationary with respect to lift. Then the mass of the block will be A mass M is suspended by a rope from [...]
A massless spring balance is attached to 2 kg trolley and is used to pull the trolley along a flat smooth surface as shown in the figure. The reading on the spring balance is 10 kg during the motion. The acceleration of the trolley is (Use g=9.8 ms^−2)
19
Oct
A massless spring balance is attached to 2 kg trolley and is used to pull the trolley along a flat smooth surface as shown in the figure. The reading on the spring balance is 10 kg during the motion. The acceleration of the trolley is (Use g=9.8 ms^−2) A mass M is suspended by a [...]
Two blocks of masses M1 and M2 are connected to each other through a light spring as shown in figure. If we push mass M1 with force F and cause acceleration a1 in right direction for mass M1, what will be the magnitude of acceleration of M2 ?
19
Oct
Two blocks of masses M1 and M2 are connected to each other through a light spring as shown in figure. If we push mass M1 with force F and cause acceleration a1 in right direction for mass M1, what will be the magnitude of acceleration of M2 ? Two blocks of masses M1 and M2 [...]
A small, circular ring is inside a larger loop that is connected to a battery and a switch as shown in Fig. 3.25. Use Lenz’s law to find the direction of the current induced in the small ring (a) just after switch S is closed, (b) after Shas been closed for a long time, ( c) just after S has been reopened after being closed for a long time.
19
Oct
A small, circular ring is inside a larger loop that is connected to a battery and a switch as shown in Fig. 3.25. Use Lenz’s law to find the direction of the current induced in the small ring (a) just after switch S is closed, (b) after Shas been closed for a long time, ( [...]
A square loop of wire with resistance R is moved at constant speed v across a uniform magnet field confined to a square region whose sides are twice the lengths of those of the square loop (a) Sketch a graph of the external forces F needed to move the loop at constant speed, as a function of to sketch a graph of the external force F need tho coordinate x, fromx=−2L to x=+2L. (The coordinate x is measured from the centre of the oignetic field region to the centre of the loop. It is negative when the centre of the loop is to the left, of the centre of the magnetic field region. Take positive force to be to the right). (b) Sketch a graph of the induced current in the loop as a function of x. Take counterclockwise currents to be positive.
19
Oct
A square loop of wire with resistance R is moved at constant speed v across a uniform magnet field confined to a square region whose sides are twice the lengths of those of the square loop (a) Sketch a graph of the external forces F needed to move the loop at constant speed, as a [...]
The wire as shown in figure is bent in the shape of a tent, with θ = 60∘ and L = 1.50 m and is placed in a uniform magnetic field of magnitude 0.300T perpendicular to the table rigid but hinged at points a and b. If the tent is flattened out on the table in 0.100 sec, what is the average induced emf in the wire during this time ?
19
Oct
The wire as shown in figure is bent in the shape of a tent, with θ = 60∘ and L = 1.50 m and is placed in a uniform magnetic field of magnitude 0.300T perpendicular to the table rigid but hinged at points a and b. If the tent is flattened out on the table [...]
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is ,
so that the magnet gets demagnetized when inside the solenoid ,
The coercitivity of a small magnet where the ferromagnet gets demagnetized is 3× 10^3 A/m. The current required to be passed in a solenoid of length 10cm and number of turns 100 ,
The wire as shown in figure is bent in the shape of a tent ,
Using Lenz's law ,
Figure shows a coil placed in a decreasing magnetic field applied perpendicular to the plane of the coil. The magnetic field is decreasing at a rate of 10 T/s. Find out current in magnitude and direction of current.
19
Oct
Figure shows a coil placed in a decreasing magnetic field applied perpendicular to the plane of the coil. The magnetic field is decreasing at a rate of 10 T/s. Find out current in magnitude and direction of current. is so that the magnet gets demagnetized when inside the solenoid The coercitivity of a small magnet [...]
A mass M is suspended by a rope from a rigid support at A as shown in figure. Another rope is tied at the end B, and it is pulled horizontally with a force. If the rope AB makes an angle θ with the vertical in equilibrium then the tension in the string AB is
19
Oct
A mass M is suspended by a rope from a rigid support at A as shown in figure. Another rope is tied at the end B, and it is pulled horizontally with a force. If the rope AB makes an angle θ with the vertical in equilibrium then the tension in the string AB is [...]