Which best describes the shape of the magnetic field from a long straight wire carrying a current?
The Magnetic field lines around a straight conductor carrying current are concentric circles whose centres lie on the wire. The direction of magnetic field lines can be determined using Right-Hand Thumb Rule.
How can you determine the direction of the magnetic field from current-carrying wire?
We can find the magnetic field that is caused by moving charges using a second right-hand rule. The magnetic field made by a current in a straight wire curls around the wire in a ring. You can find it by pointing your right thumb in the direction of the current in the wire and curling your fingers.
How is the direction of the force on a current-carrying wire determined?
The force on a current-carrying wire in a magnetic field is F = IlB sin θ. Its direction is given by RHR-1.
How will you describe the magnetic field around a straight current-carrying wire?
When a current flows in a wire, it creates a circular magnetic field around the wire. This magnetic field can deflect the needle of a magnetic compass. The strength of the magnetic field is greater closer to the wire, and increases if the current increases.
Will you describe the magnetic field around a current carrying coil?
The magnetic field around a current carrying coil is produced due to the current flowing through it. It is uniform throughout. It is just like the magnetic field of a bar magnet. If needles of a magnetic compass are arranged around the coil, they will arrange themselves in North to South direction.
Which kitchen appliances does not have an electric motor?
A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. And does NOT have a electric motor. What is Food processor?
What is really meant when we classify an appliance as low powered?
Power Classification An appliance will have details of the power rating written on it somewhere. Low powered appliances only need a 3A (3 amp) fuse. They have power ratings of 720 W (720 watts) or less. Medium powered appliances require a 5 A (5 amp) fuse (although a 13A fuse is often fitted).