A compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12 cm. The coil is in a vertical plane making an angle of 45° with the magnetic meridian. When the current in the coil is 0.35 A, the needle points west to east. (a) Determine the horizontal component of the earth’s magnetic field at the location.(b) The current in the coil is reversed, and the coil is rotated about its vertical axis by an angle of 90° in the anticlockwise sense looking from above. Predict the direction of the needle. Take the magnetic declination at the places to be zero.

Q: (a) At what speed (in m/s) will a proton move in a circular path of the same radius as an electron…

A: Given,speed of the electron, ve = 7.25 ×106 msmagnetic field strength, B = 1.15 ×10-5 T

Q: A horizontal power line of length 54.2 m carries a current of 2.13 kA northward as shown in the…

A: Given, Current , I = 2.13 kA length, l = 54.2 m Earth's magnetic field , B = 4.50 ×10-5  T θ = 650…

Q: The force on a wire is a maximum of 8.50x10² NN when placed between the pole faces of a magnet. The…

A: Given,Force on wire (F) = Diameter of pole faces (D) = 11 cmMagnetic Field (B) = 0.220 TAngle…

Q: An electron moving at a speed of 8.00 x 106 m/s along the x-axis, enters a region in which there is…

A: Given, The speed of the electron, v=8×106 m/s The magnitude of the magnetic field, B=2.50 T Angle,…

Q: Magnetic dip' results from the tendency of a magnet to align itself with lines of force. The range…

A: At equator, the magnetic dipole will allign along the horizontal.

Q: Question: A conductive wire, which is shaped in a 'U' without being connected to any power supply or…

A:

Q: A 6.0-cm straight conductor carries a current of 14 A through a uniform 0.70-T magnetic field. When…

A: Given Length of a straight conductor = L = 6.0 cm Current in the conductor = I = 14 A Strength of…

Q: A flat circular coil of wire with diameter of 5.00 cm has 10 turns and carries a current of 1.25 mA.…

A: Given: Diameter of coil, d=5.00 cm Number of turns, N = 10 Current i = 1.25 mA Orientation, θ=30.0°…

Q: In an electric motor, a coil with 112 turns of radius 2.40 cm can rotate between the poles of a…

A: As per guidelines we are suppose to do only one question from multiple questions and three subpart…

Q: A horizontal compass is placed 0.6 cm due South from a straight vertical wire carrying a 5.5 A…

A: a)1.884 x 10-4 Tb) 87.67o from East (counterclockwise)Explanation:

Q: A length of conducting wire is bent into a circular coil of 4 turns. The diameter of the circle is…

A: Using the earth magnetic and magnetic field due to a loop.

Q: At a certain place, the magnetic field of the earth is 800 uT directed vertically downward. Estimate…

A:

Q: A horizontal power line carries a current of 4A in a east to west direction. The magnitude and…

A:

Q: The figure shows a wire ring of radius a 1.88 cm that is perpendicular to the general direction of a…

A: Radius of wire,a = 1.88 cmMagnetic field,B = 3.17 mTAngle= 36.70current carried by ring ,I = 4.94 mA

Q: A loop of current is lying in the x-y plane and is flowing counterclockwise around the +z axis. If a…

A:

Q: Calculate the magnitude of the magnetic force exerted on a wire that is 20 mm ong and carries a…

A:

Q: Using the Biot-Savart law, determine the expression for the esultant magnetic field B, along the…

A:

Q: Electrons starting from rest are accelerated through a potential difference of 240 V and fired into…

A:

Q: A short bar magnet of magnetic movement 5.25 × 10–2 J T-1 is placed with its axis perpendicular to…

A: The value of the earth magnetic field is:

Q: A ring of radius 8.0 cm is placed concentrically around a ring of radius 6.0 cm (see figure  below).…

A:

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.