 | 1906 - 586 páginas
...conductor. They should know the following rule: Knowing the direction of the current, grasp the conductor with the right hand so that the thumb points in the direction of the current, then the fingers will indicate the positive direction of the lines of force around the conductor. (b)... | |
 | Charles Elijah Linebarger - 1910 - 492 páginas
...turning and driving in of a corkscrew. If the wire be grasped by the right hand (Fig. 349) in such a- way that the thumb points in the direction of the current, the fingers will point in the ,direction of the lines of force. The I > A^-pole of a compass turns toward }| the west either when a current is FIG>... | |
 | Newton Henry Black - 1913 - 540 páginas
...carrying a current is the so-called thumb rule. If one grasps the wire with the right hand (Fig. 231) so that the thumb points in the direction of the current, the fingers will point Fla 230. _ Magnetic lines of lorce around a current. f\ (j FIG. 231. — Thumb rule for magnetic field... | |
 | Newton Henry Black, Harvey Nathaniel Davis - 1913 - 530 páginas
...carrying a current is the so-called thumb rule. If one grasps the wire with the right hand (Fig. 231) so that the thumb points in the direction of the current, the fingers will point re? Ji FIG. 231. — Thumb rule for magnetic field around a wire. BATTERY CURRENTS If we know the direction... | |
 | Newton Henry Black - 1913 - 142 páginas
...so-called thumb rule. If one grasps the wire with the right hand so that the thumb points in the direct/on of the current, the fingers will point in the direction of the magnetic field. (e) Put the wire under the compass and without changing the direction of the current note the direction... | |
 | William Henry Timbie, Henry Harold Higbie - 1919 - 402 páginas
...a wire carrying an electric current is by the thumb rule. THUMB RULE If we grasp the wire with our right hand, so that the THUMB points in the direction...will point in the direction of the magnetic field. Similarly, if we know the direction of the magnetic field, we can find the direction of the current.... | |
 | Ervin Sidney Ferry - 1921 - 772 páginas
...the direction of the magnetic field about a current-carrying conductor is the so-called Right-hand Thumb Rule — if one grasps the wire with the right...points in the direction of the current, the fingers irill point in the direction of the magnetic field. If a current flows through a wire passing perpendicularly... | |
 | Ervin Sidney Ferry - 1921 - 762 páginas
...current-carrying conductor is the so-called Right-hand Thumb Rule — if one grasps the wire with the riqhl hand so that the thumb points in the direction of...will point in the direction of the magnetic field. If a current flows through a wire passing perpendicularly through the plane of the paper, then the... | |
 | Ervin Sidney Ferry - 1921 - 766 páginas
...a current-carrying conductor is the so-called Right-hand Thumb Rule — if one grasps the wire unth the right hand so that the thumb points in the direction of the current, the fingers u"ill point in the direction of the magnetic field. If a current flows through a wire passing perpendicularly... | |
 | 1921 - 1066 páginas
...Fie. 7,670. — The "left hand rule" for direction of motion in motors. Place the left hand, as shown, so that the thumb points in the direction of the current, the 3rd, 4th and 6th fingers in the direction of the lines of force , then will the tnd or forefinger,... | |
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Fig. 260) — if one grasps the wire with the right hand so that the thumb points in the direction of the current, the fingers will point in the direction of the magnetic field. 
