The bar of length 1=20 cm, resistance 0.0005 Ohms and mass 1 kg shown in the figure slides from rest down the fric­tionless contacts. A magnetic field B is directed vertically upward with mag­nitude l Tesla. The angle is (theta)=30°  a) At the instant the velocity of the bar is 0.1 m/s down the incline, find the induced current in the rod. b) Viewed-from above is the current clockwise or counter clockwise? c) After a while the bar slides with constant speed. Find the magnitude of this constant speed.

Q: Need help with #4

A:

Q: A 0.30-m-long metal bar is pulled to the left at constant speed of 20 m/s perpendicular to a…

A: The induced emf is determined by the rate of flux change Emf=dϕdt=ddtBxl=Bldxdt=Blv

Q: In the drawing below a wire is looped as shown -- note that the wire crosses over top of itself with…

A: Given data: Resistance R = 4 ohms side of upper loop lU =16 cm side of lower loop ll=lU2 Magnetic…

Q: A variable magnetic field is perpendicular to a 195-turn coil of area 0.305 m?. The magnetic field…

A:

Q: A train travels at 7.7 m/s due east. Calculate the induced emf between the ends of a horizontal axle…

A: Given  Train travel at 7.7 m/s due east.  V = 7.7 m/s  Axle is ,7.9 m long,  L = 7.9 m  Earth…

Q: A square circuit with sides of length ℓ = 0.30 m and R = 10 ? moves with a constant velocity v = 3.0…

A: When a closed circuit brings in a magnetic field or is close to the magnet so that the magnetic…

Q: wire loop with a resistance of 2.5 ohms and a radius of 0.255m is places in a magnetic field that…

A: Given resistance of wire = 2.5 ohms radius of wire =  0.255 m  B(t)=0.25e^(-.5t) We have to…

Q: How to determine the magnitude of the time changing magnetic flux thru the loop, if the EMF is…

A: It is given that

Q: circular loop of radius 5.1 cm is formed, placed with its plane perpendicular to a uniform magnetic…

A:

Q: Don't use chatgpt will upvote

A: Step 1: As per the question: a) The current induced in the bar will be from a to b.  Explanation:The…

Q: Problem 4: A rectangular conducting loop has sides a = 0.045 m, sides b = 0.15 m, and resistance R =…

A:

Q: The magnetic field in the figure is changing in strength. As a result, on the shown loop of area…

A:

Q: A circular loop of radius 12 cm has a resistance R = 2.6 Ω. The plane of the loop is perpendicular…

A: area vector A  is perpendicular to plane of loop  thank you

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A: Given,

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A:

Q: Calculate the magnetic induction, B, of a wire that carries a current of 100 amps, at a distance of…

A:

Q: S - Pm The magnetic flux through the loop shown in the accompanying figure varies with time…

A: Given,ϕm=ϕ0 e-αt sinωt    ----(1)where,ϕ0=5×10-3 T m2α = 4 s-1.ω=120 π rad/s.R=5 Ω.The magnitude and…

Q: A wire of resistance 0.50 ohms forms a loop of area 7.85*10^5 m^2, andthen is placed in a uniform…

A:

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A: R = 5.80 Ω Magnetic field B = 2.50 T l = 1.20 m v = 2.50 m/s

Q: Cônsidér thé árrangement shown the figure belów. Assumé R = 4.00 and ? = 1.10 m, and a uniform…

A: Time varying magnetic fields produces a induced EMF which in turn produces current. This EMF depends…

Q: A conducting bar of length e moves to the right on two frictionless rails as shown in the figure…

A: # NOTE: Thank you for the question. As per the company honor code, we are allowed to answer up to…

Q: A conducting crossbar is in electrical contact with two vertical conducting wires and slides down…

A:

Q: The Earth's magnetic field is approximately 0.500 Gauss. If a circular loop of radius 1.00 m is…

A: Magnetic field B=0.500 Gauss=5×10-5 TRadius of loop r=1.00 mAngle θ=45°

Q: A 500-turn square coil of wire is hinged to the top of a table, as shown in the (Figure 1). Each…

A:

Q: You have a circular loop of wire in the plane of the page with an initial radius of 0.40 mm which…

A:

Q: A 0.220 m radius, 506 turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having…

A: SOlution: given that r = 0.22 m N = 506 t = 4.17 ms emf = 10000 V