Consider the situation depicted below, where three closely spaced wires are carrying currents of magnitudes i = 1.2 mA, i2 = 4.1 mA and iz = 1.9 mA, with directions either into the page or out of the page, as indicated in the figure. In one of the points the magnetic field is measured to be B = (-9.2î + 4.6ĵ) (units μΤ) In which of the points indicated in the figure was this magnetic field measured?

A straight conductor of fixed length / is moving at 45 degrees to a uniform magnetic field of strength B with constant speed v. Calculate v, if B=9.7 T, 1=2.5 m and electromotive force e 5 V. Give your answer in Sl units. Answer: m/s

At a certain location, Earth's magnetic field of 52 µT is horizontal and directed due north. Suppose the net field is zero exactly 8.3 cm above a long, straight, horizontal wire that carries a constant current. What are (a) the magnitude of the current and (b) the angle between the current direction and due north? (a) Number Units (b) Number Units

We have 2 wires, each in a loop, centered around point C. The smaller looped wire has current 12 = 860 A, inside a larger looped wire with current 11= 609 A. The direction of the currents are indicated in the illustration. If distances d1= 7.4 mm, and d2 = 2.4 mm, what magnetic field is experienced at point C by both wires? (THIS MEANS BOTH MAGNITUDE + DIRECTION) (Into the paper is negative -z, Out of the paper is positive +z) 11 d1 12 d2 c

A loop of wire with radius r=0.075m is placed in a region of uniform magnetic field with magnitude B. As shown in the figure, the field direction is perpendicular to the plane of the loop. The magnitude of the magnetic field changes at a constant rate from B1=0.55T to B2=1.5T in time Δt=5.5s. The resistance of the wire is R=6Ω A. Calculate, in Tesla squared meters, the magnitude of the change in the magnetic flux.  B. Calculate, in volts, the average EMF induced in the loop.  C. Calculate, in amperes, current induced in the loop.

The figure below shows a cross section of a long thin ribbon of width w = 6.42 cm that is carrying a uniformly distributed total current i = 4.76 μA into the page. Calculate the magnitude of the magnetic field at a point P in the plane of the ribbon at a distance d = 2.73 cm from its edge. (Hint: Imagine the ribbon as being constructed from many long, thin, parallel wires.) Number i Units x X X X X -x W

A particle with a mass of 1.81x10^-3 kg and a charge of 1.22×10^-8C has a velocity = (3.00 x 10^4m/s)j at a given instant. In the region there is a uniform magnetic field B= (1.63T)i + (0.980T)j.a. The magnitude and direction of the magnetic force on the charge is: _____x10-4N in direction.b. The magnitude and direction of the particle's acceleration is:_____m/s^2 in direction.

A 13-cm length of wire is held along an east-west direction and moved horizontally to the north with a speed of 2.2 m/s in a region where the magnetic field of the earth is 55 micro-T directed 28° below the horizontal. What is the magnitude of the potential difference between the ends of the wire? Write your answer in micro-volts.

The set up is shown in the figure, where 25 A is flowing in the wire segments, AB = CD = 36 m, and the wire segment arc has a radius 33 m subtending an angle of 90◦. The permeability of free space is 1.25664 × 10^−6 T · m/A. Find the magnitude of the magnetic field at O due to the current segment ABCD.Answer in units of T.