{"id":546942,"date":"2023-04-23T16:46:49","date_gmt":"2023-04-23T11:16:49","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/question\/a-point-charge-q14q0-is-placed-at-origin-another-point-charge-q2%e2%88%92q0-is-placed-at-x-12-cm-charge-of-proton-is-q0-the-proton-is-placed-on-x-axis-so\/"},"modified":"2025-06-19T19:44:53","modified_gmt":"2025-06-19T14:14:53","slug":"a-point-charge-q14q0-is-placed-at-origin-another-point-charge-q2%e2%88%92q0-is-placed-at-x-12-cm-charge-of-proton-is-q0-the-proton-is-placed-on-x-axis-so","status":"publish","type":"questions","link":"https:\/\/infinitylearn.com\/surge\/question\/physics\/a-point-chargeq14q0is-placed-at-origin-another-point-cha\/","title":{"rendered":"A point charge\u00a0q1=4q0\u00a0is placed at origin. Another point charge\u00a0q2=\u2212q0\u00a0is placed at\u00a0x\u00a0=\u00a012\u00a0cm. Charge of proton is q0 .The proton is placed on x axis so that the electrostatic force on the proton is zero. In this situation, the position of the proton from the origin is _____________cm."},"content":{"rendered":"","protected":false},"author":1,"template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"A point charge\u00a0q1=4q0\u00a0is placed at origin. Another point charge\u00a0q2=\u2212q0\u00a0is placed at\u00a0x\u00a0=\u00a012\u00a0cm. Charge of proton is q0 .The proton is placed on x axis so that the electrostatic force on the proton is zero. In this situation, the position of the proton from the origin is _____________cm.","custom_permalink":"question\/physics\/a-point-chargeq14q0is-placed-at-origin-another-point-cha\/"},"categories":[],"acf":{"question":"

A point charge q<\/mi>1<\/mn><\/msub>=<\/mo>4<\/mn>q<\/mi>0<\/mn><\/msub> <\/mo><\/math>is placed at origin. Another point charge q<\/mi>2<\/mn><\/msub>=<\/mo>\u2212<\/mo>q<\/mi>0<\/mn><\/msub><\/math> is placed at x<\/mi> <\/mo>=<\/mo> <\/mo>12<\/mn> <\/mo>cm<\/mi><\/math>. Charge of proton is q0<\/sub> .The proton is placed on x axis so that the electrostatic force on the proton is zero. In this situation, the position of the proton from the origin is _____________cm.<\/p>","options":null,"solution":"
<\/figure>

Let proton is at point P, for net force zero
F<\/mi>1<\/mn><\/msub>=<\/mo>F<\/mi>2<\/mn><\/msub><\/mtd><\/mtr>\u21d2<\/mo>K<\/mi>4<\/mn>q<\/mi>0<\/mn><\/msub>\u00d7<\/mo>q<\/mi>0<\/mn><\/msub><\/mrow>(<\/mo>12<\/mn>+<\/mo>r<\/mi>)<\/mo>2<\/mn><\/msup><\/mrow><\/mfrac>=<\/mo>K<\/mi>\u00d7<\/mo>q<\/mi>0<\/mn><\/msub>\u00d7<\/mo>q<\/mi>0<\/mn><\/msub><\/mrow>r<\/mi>2<\/mn><\/msup><\/mfrac><\/mtd><\/mtr>\u21d2<\/mo>2<\/mn>12<\/mn>+<\/mo>r<\/mi><\/mrow><\/mfrac>=<\/mo>1<\/mn>r<\/mi><\/mfrac><\/mtd><\/mtr>\u21d2<\/mo>r<\/mi>=<\/mo>12<\/mn><\/mtd><\/mtr><\/mtable><\/math>
\u2234<\/mo><\/math>Position is 24cm from origin<\/p>","subject":"Physics"},"yoast_head":"\nA point charge\u00a0q1=4q0\u00a0is placed at origin. Another point charge\u00a0q2=\u2212q0\u00a0is placed at\u00a0x\u00a0=\u00a012\u00a0cm. Charge of proton is q0 .The proton is placed on x axis so that the electrostatic force on the proton is zero. In this situation, the position of the proton from the origin is _____________cm. - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"A point charge\u00a0q1=4q0\u00a0is placed at origin. Another point charge\u00a0q2=\u2212q0\u00a0is placed at\u00a0x\u00a0=\u00a012\u00a0cm. Charge of proton is q0 .The proton is placed on x axis so that the electrostatic force on the proton is zero. 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