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If you grip the wire with your right hand with your thumb pointing in the current's direction, your fingers will curl from P to Q. (Imagine a coil around the wire with the arrows pointing in the same direction as your fingers)Help help said:Thanks.
I don't get why the answer is C. :(
PWiz said:For current carrying wires, always use the right hand grip rule to determine the direction of the magnetic field lines.
PWiz said:If you grip the wire with your right hand with your thumb pointing in the current's direction, your fingers will curl from P to Q. (Imagine a coil around the wire with the arrows pointing in the same direction as your fingers)
M is right below the wire. The direction of your fingers right below you thumb will then point toward P. You can imagine your right hand moving vertically downwards in the grip position until your fingers touch the cardboard (like bringing a fist down on the cardboard, only with your thumb pointing out). At the point of contact of your fingers with the cardboard, your fingers will point towards P.
Fleming's left hand rule, also known as the motor rule, is a way to determine the direction of the force acting on a current-carrying wire in a magnetic field. It states that if the forefinger, middle finger, and thumb of the left hand are held at right angles to each other, with the forefinger pointing in the direction of the magnetic field, the middle finger pointing in the direction of the current, then the thumb will point in the direction of the force acting on the wire.
The right hand grip rule is a method for determining the direction of the magnetic field created by a current-carrying wire. It states that if the right hand is wrapped around the wire with the thumb pointing in the direction of the current, then the curled fingers will point in the direction of the magnetic field lines.
The main difference between Fleming's left hand rule and the right hand grip rule is the direction of the force and magnetic field that they determine. Fleming's left hand rule is used to find the direction of the force acting on a wire in a magnetic field, while the right hand grip rule is used to find the direction of the magnetic field created by a current-carrying wire.
Fleming's left hand rule is commonly used in situations where a wire carrying current is placed in a magnetic field and the direction of the force acting on the wire needs to be determined. It is often used in motors, generators, and other electrical devices.
One way to remember Fleming's left hand rule is to visualize the left hand as a person with the thumb representing the direction of the force, the forefinger representing the direction of the magnetic field, and the middle finger representing the direction of the current. Another way is to use the mnemonic "FBI" which stands for Force, B-field (magnetic field), and Current.